Map Reading and Land Navigation

Question 1

What document covers map reading and land navigation?

Answer 1

TC 3-25.26

Question 2

What is a map?

Answer 2

A graphic representation of the Earth’s surface, drawn to scale as seen from above.

Question 3

What is the purpose of a map?

Answer 3

To provide accurate information about the existence, location, and distance between ground features like terrain, elevation, populated areas, routes of travel and communication.

Question 4

How many Norths are there on a military map?

Answer 4

Three:

1. True North
2. Grid North
3. Magnetic North

Question 5

What does the color black stand for on a map?

Answer 5

It indicates man-made features like buildings and roads.

Question 6

What does the color blue stand for on a map?

Answer 6

It identifies water features like lakes, swamps, rivers and drainage.

Question 7

What does the color green stand for on a map?

Answer 7

It stands for vegetation with military significance, such as woods, orchards, or vineyards.

Question 8

What does the color brown stand for on a map?

Answer 8

It identifies all relief features and elevation, as well as contour lines on older maps.

Question 9

What does the color red stand for on a map?

Answer 9

It is used for cultural features such as populated areas, main roads, and on older maps it indicates boundaries.

Question 10

What does the color reddish-brown stand for on a map?

Answer 10

It identifies all relief features and elevation, as well as contour lines on red light readable and newer maps.

Question 11

How close will you get to a location with a six digit grid coordinate?

Answer 11

Within 100 meters.

Question 12

How close will you get to a location with an eight digit grid coordinate?

Answer 12

Within 10 meters.

Question 13

What is an azimuth?

Answer 13

It is a direction, a horizontal angle which is measured in degrees or mils from the North.

Question 14

What are the five major terrain features of a map?

Answer 14

1. Hill
2. Valley
3. Ridge
4. Saddle
5. Depression

Question 15

What are the three minor terrain features of a map?

Answer 15

1. Draw
2. Spur
3. Cliff

Question 16

What are the two supplementary terrain features of a map?

Answer 16

1. Cut

2. Fill

Question 17

What are the two methods for holding a compass?

Answer 17

The centerfold technique and the compass-to-cheek technique.

Question 18

How would you hold a lensatic compass?

Answer 18

Level and firm, away from electrical or metal equipment.

Question 19

Describe the fastest way to orient a map.

Answer 19

Place a compass on a map and align it with the grid lines insuring that the compass needle points north.

Question 20

How would you orient a map without a compass?

Answer 20

By aligning it with the observable terrain features.

Question 21

What three elements are necessary for dead reckoning in land navigation?

Answer 21

1. Known starting point
2. Known distance
3. Known azimuth.

Question 22

Resection

Answer 22

The method of locating one’s position on a map by determining the grid azimuth to at
least two well-defined locations that can be pinpointed on the map.

Question 23

Name several types of maps.

Answer 23

Topographic map, planimetric map, photomap, and terrain model.

Question 24

Features of a map

Answer 24

a. Marginal information
b. Sheet name
c. Sheet number
d. Series name
e. Series number
f. Scale
g. Edition number
h. Credit line
i. Declination diagram
j. Bar scales
k. Contour interval
l. Legend